Air entrainment flusher of micro-irrigation sandrock filter

Abstract

The invention discloses an air-entrapping flusher of a micro-irrigation sandstone filter, comprising a filtering tank and a sandstone filter material filled in the filtering tank. A clapboard of a header tank is arranged below the sandstone filter material at the bottom of the filtering tank. A filter cap is arranged on the clapboard of the header tank and two air washing rings are arranged in the periphery and the middle of the filter cap. Air holes are evenly distributed at the up direction of the air washing rings in an interlaced way. The two air washing rings are connected with an air inlet pipe that runs through upwards along the inner wall of a tank body from a sand feeding port in a seal way and is communicated with an air compressor. The invention utilizes the combined action of water and air to cause a whole filter material layer in the tank body to produce the strong stirring, which can effectively wash impurities adhering to the sandstone cleanly with the action of impact of air and water flow and friction force caused by the collision of sandstones. With convenient operation and good backwashing effect, the invention saves the cleaning water used for washing.

Description

Technical field: [0001] The invention relates to farmland irrigation, in particular to a micro-irrigation gravel filter air-entraining flushing device which is easy to operate, saves clean water for flushing and is easy to control. Background technique: [0002] Micro-irrigation is the most water-saving irrigation technology in the world today. Micro-irrigation filter is the most critical equipment in the system. After accumulation to a certain extent, it must be backwashed. The current backwashing device is mainly realized by consuming a large amount of clean water. The existing problems are that it consumes a lot of energy and water to completely wash away the impurities adhered to the sand and gravel, and the second is that some filter material particles at the bottom of the filter layer cannot be completely washed. , The impurities deposited inside accumulate, these impurities can easily enter the micro-irrigation system and block the emitter, causing the micro-irrigati...

AI Technical Summary

Problems solved by technology

The current backwashing device is mainly realized by consuming a large amount of clean water. The existing problems are that it consumes a lot of energy and water to completely wash away the impurities adhered to the sand and gravel, and the second is that some filter material particles at the bottom of the filter layer cannot be completely washed. , the accumulation of impurities deposited inside, these impurities can easily enter the micro-irrigation system and block the emitter, causing the micro-irrigation system to be scrapped and damaged, affecting normal irrigation

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